Question

Draw the product of each of the following reactions:

a.

b.

Short answer

The product of each reactionsare,

a.

b.

Step-by-step solution

Step-by-Step SolutionStep 1: Intramolecular Friedel-Crafts alkylation

In Intramolecular Friedel-Crafts alkylation, the aromatic ring acts as a nucleophile, and the alkyl chloride acts as an electrophile.With the Lewis acid catalyst (${\text{AlCl}}_{\text{3}}$), C-C bonds are formed, and C-H and C-Cl bonds are broken. The ring formation takes place in these types of reactions.

The product formed in reaction (a)

(a) This reaction is intramolecular Friedel-Crafts alkylation, and a carbocation rearrangement occurs in this reaction.

The product formed in intramolecular Friedel-Crafts alkylation (a)

Step 3: The product formed in reaction (b)

(b)This reaction is an example of double Friedel-Crafts alkylation, and in this reaction a cyclohexane ring is formed.

The product formed in double Friedel-Crafts alkylation (b)